#include <stdio.h>
#include <math.h>    //引入数学库
int main()
{
	int weight = 0;    //初始化
	int high = 0;
	scanf_s("%d %d", &weight, &high);
	printf("%.2f", weight / pow(high / 100.0, 2));       //pow函数，计算平方
	return 0;

